Global Patent Index - EP 2383972 A4

EP 2383972 A4 20120815 - IMAGE READER DEVICE AND METHOD FOR DRIVING SAME

Title (en)

IMAGE READER DEVICE AND METHOD FOR DRIVING SAME

Title (de)

BILDLESEGERÄT UND ANSTEUERUNGSVERFAHREN DAFÜR

Title (fr)

DISPOSITIF DE LECTURE D IMAGES ET PROCÉDÉ DE COMMANDE DUDIT DISPOSITIF

Publication

EP 2383972 A4 20120815 (EN)

Application

EP 09837610 A 20091222

Priority

  • JP 2009071842 W 20091222
  • JP 2009003674 A 20090109

Abstract (en)

[origin: EP2383972A1] The present invention provides an image reader apparatus capable of obtaining an image having stable brightness while suppressing an increase of the cost of the apparatus. The image reader apparatus 1 for reading an image on a document 2 being fed and outputting an image signal includes a synchronization signal generation circuit 4 for generating a synchronization signal SS synchronous with a feed timing and a feed cycle of the document 2, a CCD 6 for reading an image on the document 2 in synchronism with the synchronization signal SS, an LED 9 for emitting white light, and a lighting control circuit 7 for turning the LED 9 on in synchronism with the synchronization signal SS and turning the light source off so that a lighting period is equalized for each line irrespective of a variation of the feed cycle of the document 2. The lighting control circuit 7 turns the LED 9 off so that the lighting period of the LED 9 is equal to a predetermined preset period.

IPC 8 full level

H04N 1/04 (2006.01); G03B 27/54 (2006.01); G06T 1/00 (2006.01); H04N 1/028 (2006.01); H04N 1/03 (2006.01)

CPC (source: EP KR US)

G03B 27/54 (2013.01 - EP KR US); G06T 1/00 (2013.01 - KR); H04N 1/028 (2013.01 - KR); H04N 1/02865 (2013.01 - EP US); H04N 1/03 (2013.01 - EP US); H04N 1/04 (2013.01 - KR); H04N 1/12 (2013.01 - EP US); H04N 1/193 (2013.01 - EP US); H04N 2201/0081 (2013.01 - EP US)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

DOCDB simple family (publication)

EP 2383972 A1 20111102; EP 2383972 A4 20120815; CN 102257803 A 20111123; JP 2010161719 A 20100722; KR 101268815 B1 20130528; KR 20110100246 A 20110909; TW 201042996 A 20101201; TW I420892 B 20131221; US 2011255118 A1 20111020; US 9167123 B2 20151020; WO 2010079725 A1 20100715

DOCDB simple family (application)

EP 09837610 A 20091222; CN 200980151108 A 20091222; JP 2009003674 A 20090109; JP 2009071842 W 20091222; KR 20117015104 A 20091222; TW 99100097 A 20100105; US 200913141452 A 20091222